Question: Which pseudonym described in PlusPedia  is used by the fewest children?
Paraphrase: Which of the pseudonyms described in PlusPedia is used the least by children?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q61002 . ?ent wdt:P1971 ?obj . ?ent wdt:P1343 wd:Q11819780} ORDER BY ASC(?obj)LIMIT 5 
Answer: Randy Heitmann, Paul Ernest